Missing OSX support for 2.18

[h-vetinari]

Currently there are no 2.18 builds for osx-arm64 & osx-64. While we believe the recipe would be ready, the builds time out in azure (hard 6h timelimit), and so far there has been no-one that could build this locally according to CFEP-03 - see some discussion in #414.

If you have a MacOS machine and are willing to build the recipe, please let us know!

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In terms of alternatives, I've started a conversation within conda-forge/core to set up a macOS server without a 6h time limit (along the lines of how this now works through cirun for both linux & windows), but this needs funding or sponsorship, as well as some technical integration work, so don't expect this to happen quickly.

As a long shot, it's technically be possible to cross-compile osx-{64,arm64} from a linux-64 host, but from attempting this in #415, it is an absolute nightmare with bazel (despite providing what I understand to be the correct configuration, it refuses to respect the necessarily non-default location of the downloaded macOS SDK).

Completion table

Python Version	OSX x86	OSX Arm	log
3.12	mark.harfouche/label/tensorflow	isuruf/label/tensorflow	osx-64-py312.log.txt osx-arm64-py312.log
3.11	mark.harfouche/label/tensorflow	isuruf/label/tensorflow	osx_64_python3.11.____cpython.log osx-arm64-py311.log
3.10	osx-64-py310.log	isuruf/label/tensorflow	osx-arm64-py310.log
3.9	mark.harfouche/label/tensorflow	isuruf/label/tensorflow	osx_64_python3.9.____cpython.log osx-arm64-py39.log

[hmaarrfk]

I have limited access to an OSX machine. is it worthwhile to upload packages for python 3.12?

I'm thinking of the following order:

• python 3.12
• python 3.11
• python 3.10
• python 3.9

Effectively 3.9 and soon 3.10 are like EOL. so might as well just prioritize the newer pythons. I've been skipping the "odd" versions for my own software.

[h-vetinari]

3.10 is pretty far from EOL, but OTOH even having just 3.12 and 3.11 would already be a pretty big win!

[hmaarrfk]

Ok I added a completion table, I'll be going from left to right, top to bottom.

[isuruf]

I'll go from bottom to top.

[hmaarrfk]

Thanks Isuru! ps. i basically spent yesterday updating xcode, and I'll lose my access today. So hopefully I can get through Python 3.12.

[hmaarrfk]

Sorry I wasn't able to get through a single build before I had to leave...

[hmaarrfk]

starting:
Done on March 8

python build-locally.py osx_64_python3.12.____cpython | tee osx_64_python3.12.____cpython.log

March 9 -- done

python build-locally.py osx_64_python3.11.____cpython | tee osx_64_python3.11.____cpython.log

March 9

python build-locally.py osx_64_python3.9.____cpython | tee osx_64_python3.9.____cpython.log

[hmaarrfk]

Well my machine stopped connecting to the internet for the Python 3.9 + osx x86 build. I've tried to rerun a few times already...

[hmaarrfk]

@h-vetinari would you do the honors of copying over!